Introductory Physics Homework Help Forum

Post thread
Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
  • Sticky
Homework Help Guidelines for Students and Helpers
  • Last Post
Replies
2
Views
60K
  • Sticky
Hey! I posted in homework help but now it's gone!
  • Last Post
Replies
0
Views
24K
  • Sticky
Homework Help: Introductory Physics Formulary
  • Last Post
Replies
6
Views
135K
Closed path term in Thermodynamics
  • Last Post
Replies
7
Views
58
Conservation of relativistic energy, collision of particles
  • Last Post
Replies
15
Views
118
Three equal forces applied to a rectangle, find net torque direction?
  • Last Post
Replies
21
Views
171
Entropy Change of Melting Ice
  • Last Post
Replies
4
Views
41
Work done to compress gas
  • Last Post
Replies
8
Views
49
Spacetime diagram exercises: Analysis of two events using invariant intervals
  • Last Post
Replies
10
Views
127
Electric fields between point charges
  • Last Post
Replies
3
Views
94
Keeping a uniform bar in horizontal equilibrium
  • Last Post
Replies
3
Views
61
Confused about significant figures in official solutions
  • Last Post
Replies
6
Views
101
Poiseuille equation for water flow rate
  • Last Post
Replies
16
Views
177
Uncertainties propagation for area of a rectangle
  • Last Post
Replies
5
Views
129
Calculate these 5 temperatures along this Thermodynamic cycle
  • Last Post
Replies
4
Views
114
Kinematics : Average velocity problem
  • Last Post
Replies
9
Views
138
Where in orbit should a rocket fire to escape with minimum ΔV
  • Last Post
Replies
17
Views
219
Simple Harmonic Motion question (Need clarification)
  • Last Post
Replies
18
Views
4K
Long distance electrical transmission efficiency
  • Last Post
Replies
2
Views
86
Method of Images from an earthed half cylinder and plane
  • Last Post
Replies
7
Views
146
Einstein's Electrodynamics of moving Bodies
  • Last Post
Replies
7
Views
142
Current in a cube resistor
  • Last Post
Replies
6
Views
119
Effect of a polarizer/analyzer on partially polarized light
  • Last Post
Replies
25
Views
253
Final velocity involving a can of soup and an inclined plane
  • Last Post
Replies
14
Views
217
Forces in a line
  • Last Post
Replies
1
Views
122
Work done to lift a mass of water
  • Last Post
Replies
6
Views
5K
Trouble solving for end state of two control volumes in a rigid tank
  • Last Post
Replies
4
Views
160
Rearrange formula and work out phase angle
  • Last Post
Replies
6
Views
188
MIT OCW, 8.02 Electromagnetism: Potential for an Electric Dipole
  • Last Post
Replies
1
Views
109
Surface density of the charges induced on the bases of the cylinder
  • Last Post
Replies
7
Views
140
Moment of inertia problem involving a cylinder rolling down an incline
  • Last Post
Replies
11
Views
187
1D Particle & Energy w/ F(x): Am I doing this right?
  • Last Post
Replies
7
Views
161
2-D Momentum Problem -- Elastic collision of two spheres
  • Last Post
Replies
12
Views
173
Jenga Tower physics
  • Last Post
Replies
20
Views
220
Thin heartshaped wire - Calculate the magnetic field at the origin
  • Last Post
Replies
18
Views
509
Electric field generated by solenoid
  • Last Post
Replies
4
Views
136
The gravitating of a small mass towards a big mass
  • Last Post
Replies
3
Views
161
Finding downward force on immersed object
  • Last Post
2
Replies
62
Views
609
Superposition of two one-dimensional harmonic waves
  • Last Post
Replies
10
Views
173
Damped harmonic oscillation of a swingboat
  • Last Post
Replies
6
Views
147
Doppler effect and acceleration of source
  • Last Post
Replies
5
Views
189
Moments of force on Jenga tower
  • Last Post
Replies
14
Views
272
How to calculate Earth speed of the Moon induced orbit?
  • Last Post
Replies
4
Views
161
Glass prism and its refractive index
  • Last Post
Replies
1
Views
158
Change in energy stored in a spherical Capacitor
  • Last Post
Replies
2
Views
370
Electric field at the center of the equilateral triangle
  • Last Post
Replies
10
Views
255
Why is the result for distance traveled different using different approaches?
  • Last Post
Replies
6
Views
167
Dipole in polar coordinates
  • Last Post
Replies
2
Views
161
Initial speed of an object launched from Mars
  • Last Post
Replies
2
Views
165
Real vs. Ideal springs
  • Last Post
Replies
7
Views
172
Unbalanced 3 phase Load - Calculate Resistance R on ph. c that leads to equivalent power in both 3 and 4 wire scenarios (ph. a and b are capacitive)
  • Last Post
Replies
9
Views
539
Applying the Kirchhoff rule to this circuit with resistors and voltage sources
  • Last Post
Replies
8
Views
209
Find Initial Velocity of a projectile given flight time and angle
  • Last Post
Replies
13
Views
158
Another way to find trig identities
  • Last Post
Replies
3
Views
187
Work done on a gas when it is compressed quasi-statically
  • Last Post
Replies
17
Views
246
Helium balloon energy conservation
  • Last Post
Replies
15
Views
256
Measuring wavelength of microwave radiation using double slits
  • Last Post
Replies
8
Views
234
Change in temperature of air in a closed system
  • Last Post
Replies
16
Views
253
Solar System Forces -- Simulating the planetary orbits for my project
  • Last Post
Replies
18
Views
298
Symmetrical parallel inductors, different currents? State Preparation!
  • Last Post
Replies
7
Views
184
Single transfer lag in an open-loop system
  • Last Post
Replies
31
Views
4K
A particle in an infinite square well
  • Last Post
Replies
2
Views
187
Speed of sound from resonant length of tube vs tuning fork wavelengths
  • Last Post
Replies
16
Views
236
Use linear regression to find Planck’s constant
  • Last Post
Replies
10
Views
227
B field on a disk
  • Last Post
Replies
10
Views
215
Which hemisphere is the observer?
  • Last Post
Replies
5
Views
291
What is the adjoint of |01>?
  • Last Post
Replies
2
Views
176
How to approach dynamics problems?
  • Last Post
Replies
8
Views
249
Gas temperature in a constant volume
  • Last Post
Replies
8
Views
309
Force between point charges at the center of two spherical shells
  • Last Post
Replies
4
Views
199
Finding the work done by a block
  • Last Post
Replies
4
Views
194
Proof of angle in path difference formula for two slits
  • Last Post
Replies
8
Views
256
Why Does Mass Behave Differently when combining matter (quarks) and antimatter?
  • Last Post
Replies
7
Views
240
Help to calculate the Delta E between two PV paths for these ideal gas samples
  • Last Post
Replies
4
Views
221
Average distance between asteroids in the asteroid belt
  • Last Post
Replies
4
Views
301
A (nonconservative) electric field is induced in any region in which...
  • Last Post
Replies
11
Views
273
Thermal expansion of square from temperature increase of 50K
  • Last Post
Replies
28
Views
355
Angular acceleration problem for a pulley used to raise an elevator
  • Last Post
Replies
8
Views
238
Finding the phase of a wave
  • Last Post
Replies
4
Views
217
Rate of loss of potential energy
  • Last Post
Replies
3
Views
249
Graphing Power vs Polarizer Angle using Intensity
  • Last Post
Replies
32
Views
367
Power dissipated by a resistor on a coaxial cable
  • Last Post
Replies
2
Views
262
Calculate the induced EMF of a rotating loop
  • Last Post
Replies
7
Views
266
Rocket acceleration problem: confused about Newton's 2nd Law
  • Last Post
2
Replies
42
Views
870
Question involving clockwise angular movement
  • Last Post
Replies
9
Views
258
Measured Surface Resistivity Much Higher than Theoretical Value (Why?)
  • Last Post
Replies
3
Views
290
Question involving angular acceleration of a spinning wheel
  • Last Post
Replies
12
Views
269
Direction of static friction between a vehicle and circular dome
  • Last Post
Replies
9
Views
269
Power and Efficiency without mass?
  • Last Post
Replies
4
Views
248
Vector-Force image and resolve force
  • Last Post
Replies
27
Views
352
Normal Force confusion -- Box being pushed on a surface with a force at an angle
  • Last Post
Replies
9
Views
309
Vector sample problem -- Force components on a spring mechanism
  • Last Post
Replies
9
Views
314
Conservation of power in a traveling wave on a string
  • Last Post
Replies
9
Views
440
Finding magnitude and direction of acceleration of a block moving in the x-y plane
  • Last Post
Replies
1
Views
307
Find speed of block using energy and spring equations? Help please
  • Last Post
Replies
6
Views
291
Compression/Tension in Steel I Beams
  • Last Post
Replies
23
Views
4K
Forces acting on a block that is pushed against a wall
  • Last Post
Replies
2
Views
298
At what angle must the boat travel so that it moves in a straight line
  • Last Post
Replies
25
Views
383
Expected value of variance of Hamiltonian in coherent states
  • Last Post
Replies
5
Views
349
Does periodic density distribution occur in space for a rigid ball under these conditions?
  • Last Post
Replies
7
Views
371
Electric Field Inside Cylindrical Capacitor
  • Last Post
Replies
2
Views
309
Normal Forces on a Sphere in a Non-vertical Groove
  • Last Post
Replies
12
Views
355
Pressure applied to the ground by a man standing on stilts
  • Last Post
Replies
7
Views
2K

Intro Physics Homework Help

Get introductory physics homework help, step by step from mentors. We do not give answers but guide you to it with your effort.

This is for algebra and calculus based general physics homework. Usually this is high school and undergraduate level problems.

Please use the template when asking for help, include all information and provide a reasonable attempt at a solution.

Hot Threads

Recent Insights

Top